Method for pre-forming conductors for motor rotors and stators
First Claim
1. A method of preforming rectangular conductors for use in a process for forming a motor winding comprising:
- a) automatically providing insulated rectangular and straightened conductors having the insulation removed from their ends;
b) automatically feeding the conductors to a shaping member, and bending the conductors around the shaping member to form the conductors into hairpin shaped preformed conductors, each having a loop integrally coupling first and second legs of the preformed conductor;
c) automatically ejecting the preformed conductors from the shaping member onto a feeder for the next operation in the process.
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Accused Products
Abstract
Method and apparatus for pre-forming insulated conductors for motor rotors and stators for use in a next process in forming motor rotors and stators. In accordance with the full exemplary process, insulated rectangular cross-section wire is received from a spool, straightened, stripped over a predetermined length, fed to a bender, cut to length and then bent into the desired hairpin shape and placed on a feeder for the next process. The method and apparatus may be fully automatic, including automatically adjusting itself as required to make hairpin shaped conductors of different lengths, each length having its free ends stripped over a desired length. The method and apparatus for bending, as well as other methods and apparatus disclosed, may be used alone or in other combinations.
44 Citations
23 Claims
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1. A method of preforming rectangular conductors for use in a process for forming a motor winding comprising:
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a) automatically providing insulated rectangular and straightened conductors having the insulation removed from their ends; b) automatically feeding the conductors to a shaping member, and bending the conductors around the shaping member to form the conductors into hairpin shaped preformed conductors, each having a loop integrally coupling first and second legs of the preformed conductor; c) automatically ejecting the preformed conductors from the shaping member onto a feeder for the next operation in the process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of preforming rectangular conductors for use in a process for forming a motor winding comprising, as an automatic process:
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a) removing insulated rectangular wire from a roll of insulated rectangular wire; b) straightening the insulated wire; c) removing the insulation from two opposite sides of the wire over a predetermined length and at locations on the wire having a predetermined spacing; d) cutting the wire into separate conductors in the middle of the locations in which the insulation has been removed; e) feeding the conductors to a shaping member; f) bending the conductors around the shaping member to form the conductors into hairpin shaped preformed conductors, each having a loop integrally coupling first and second legs of the preformed conductor; g) automatically ejecting the preformed conductors from the shaping member and feeding the preformed conductors onto a feeder for the next operation in the process. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification